All guides
Cut flowers19 varieties
Dahlia
Dahlia spp.Frost-tender tuberous perennial with abundant summer-to-frost blooms in many forms and colors.
Days to maturity
75–90 daysDays to germ.
3–5 daysSpacing
9–18 inHeight
36–72 inSun
SunHow we grow it
Germination
- Days to germ.
- 3–5 d
- Depth
- 0.25 in
Culture
- Days to maturity
- 75–90 d
- Spacing
- 9–18 in
- Height
- 36–72 in
- Sun
- Sun
- Frost
- tender
Harvest
Recent field notes
First bloom. About 4” across and not fully open.
First bloom. About 3” across
Timing · Zone 5a
JanFebMarAprMayJunJulAugSepOctNovDec
Sow indoorsApr 9
Outdoor / directMay 21 – Jun 18
Windows are anchored to an average last frost of May 21 (1 year in 10 as early as Apr 29, as late as Jun 2) and an average first frost of Sep 18 (1 year in 10 as early as Sep 6, as late as Oct 8). In a late or early year, slide them with it.
Compare in the calendarTrials
Every Dahlia sowingSeed sources, counts, ratings, and the observations kept against each one.Dahlia trialsVarieties
19 varieties on recordNo photograph yetDahlia ‘Sheer Heaven’
‘Sheer Heaven’
PeachNo photograph yetDahlia ‘Boom Boom White’
‘Boom Boom White’
WhiteNo photograph yetDahlia ‘Myrtle's Folly’
‘Myrtle's Folly’
Orange · PinkNo photograph yetDahlia ‘Franz Kafka’
‘Franz Kafka’
PinkNo photograph yetDahlia ‘Blue Boy’
‘Blue Boy’
Lavender BlueNo photograph yetDahlia ‘Creme de Cassis’
‘Creme de Cassis’
Plum · Light PurpleNo photograph yetDahlia ‘Marble Ball’
‘Marble Ball’
Purple · WhiteNo photograph yetDahlia ‘Fleurel’
‘Fleurel’
WhiteNo photograph yetDahlia ‘Bubbling Over’
‘Bubbling Over’
Lemon Yellow · Raspberry PinkNo photograph yetDahlia ‘Caribbean Fantasy’
‘Caribbean Fantasy’
White · Red · Orange-YellowNo photograph yetDahlia ‘Chilson’s Pride’
‘Chilson’s Pride’
Light Pink · Cream
‘Giant Hybrid Mix’
trying
‘Hollyhill Black Beauty’
Black-RedNo photograph yetDahlia ‘Janz Choice’
‘Janz Choice’
White · Salmon RedNo photograph yetDahlia ‘Last Dance’
‘Last Dance’
Light Lavender · White
‘Mardi Gras’
Dark Orange · YellowNo photograph yetDahlia ‘Mikayla Miranda’
‘Mikayla Miranda’
Lavender · WhiteNo photograph yetDahlia ‘Salish Twilight Girl’
‘Salish Twilight Girl’
Light Lilac · Plum
‘Various Dahlia’
trying